Latisse, which is designed to treat a condition known as hypotrichosis of the eyelashes, which means a person does not have enough eyelashes, has been approved by the Food and Drug Administration (FDA).

When applied once daily to the eyelid with a disposable applicator, the drug Latisse apparently improves the length, thickness and colour of hairs.

Continued use is necessary to maintain the thicker lashes, and side effects can include eye redness and itchiness, a darkening of the eyelid skin and a permanent darkening of the whites of the eyes.

A girl applying mascara

Mascara could be a thing of the past following the creation of a new drug by the makes of Botox. Photo: ANDREW CROWLEY

The primary ingredient in Latisse is a chemical called a prostaglandin, which is present in hair and is thought to help in the development and regrowth of hair follicles.